So which games in particular run much better on 4 cores compared to 2?

CDdude55

Distinguished
Actually most games now should run better of 4 cores then 2. Dual Core chips are pretty much phased out in the mid to high end category and only exist in the low end spectum. At the minimum most systems now have at least 4 cores with varying performance differences so most games are coded for that. It's usually only above 4 or hyperthreading that usually is the question of game performance. Though there is also the question of games that may tax more GPU resources then CPU, and in those cases the amount of cores you have isn't really much of a big deal.

I'd say most popular modern games, BF3/4. Far Cry 3, Rome II etc will tax a quad core system.